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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. public static void main (String[] args) throws java.lang.Exception
  11. {
  12. Demo d = new Demo(20);
  13. System.out.println(d.num);
  14. }
  15. }
  16. class Demo
  17. {
  18. final int num = 10;
  19. public Demo(int n)
  20. {
  21. num = n;
  22. }
  23. }
  24. }
  25. }
Compilation error #stdin compilation error #stdout 0s 0KB
stdin
Standard input is empty
compilation info
Main.java:24: error: class, interface, or enum expected
	}
	^
1 error
stdout
Standard output is empty